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DOI: 10.1039/A809442J (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1999, 1241-1248

Relative basicities of the oxygen atoms of the Linquist polyoxometalate [Mo6O19]2– and their recognition by hydroxyl groups in radical cation salts based on functionalized tetrathiafulvalene π donors

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Anne Dolbecq, Aude Guirauden, Marc Fourmigué, Kamal Boubekeur, Patrick Batail, Marie-Madeleine Rohmer, Marc Bénard, Claude Coulon, Marc Sallé and Philippe Blanchard

Abstract

Electrocrystallization of three hydroxylated donor molecules derived from tetrathiafulvalene (TTF) or ethylenedithiotetrathiafulvalene (EDT-TTF), i.e. Me3TTF-CH2OH, EDT-TTF(CH2OH)2 and TTF(CH2OH)4, in the presence of [n-Bu4N+]2[Mo6O19]2– afforded 2∶1 cation radical salts, [donor+˙]2[Mo6O19]2–, whose crystal structures have been solved by X-ray diffraction. In the three different salts complex hydrogen bond networks develop in the solid state where the oxygen atoms of both the hydroxyl groups and the [Mo6O19]2– anions act as hydrogen bond acceptors. The observed hydrogen bonding directed toward one surface, bridging oxygen atom of [Mo6O19]2– is rationalized by an analysis of ab initio calculations of the distribution of electrostatic potentials.

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